>> reporter: you are hearing more about investigate particularly from the members who now wield gavels, running the powerful committees that have subpoena power that can investigate. so we are hearing from two key committee chair men overnight about the revelations in this report saying they want to look into this further. one is the house intelligence committee chairman saying we know the president has engaged, the allegation may have been in an effort to curtail the investigation and cover up the business deals with russia. we will do what is necessary to find out if it's true. that referring to the fact that michael cohen admitted to lying before the house intelligence committee in his previous testimony. did he do it at the direction of the president? adam shif wants to understand if that is what happened.